Westinghouse / Cutler-Hammer JB3090V Circuit Breaker is a 3-pole, 90 Amp molded-case device rated for 600 V AC, designed to provide overcurrent and short-circuit protection with a thermal-magnetic trip. This panel-mounted breaker is commonly installed in panelboards, switchgear assemblies, motor control centers, and other distribution systems in commercial and industrial facilities. It protects three-phase power circuits used in manufacturing facilities, commercial buildings, HVAC systems, and industrial automation equipment, delivering dependable fault interruption for safe, continuous operation. Common replacements include Eaton JB3090V, Cutler-Hammer JB3090V, and Square D KA3690.
